EP9301-CQZ Cirrus Logic Inc, EP9301-CQZ Datasheet - Page 317

• Manufacturer Part Number: EP9301-CQZ
• Description: IC ARM9 SOC PROCESSOR 208LQFP
• Manufacturer: Cirrus Logic Inc
• Series: EP9r

Specifications of EP9301-CQZ

• Core Size: 16/32-Bit
• Peripherals: AC'97, DMA, I&sup2:S, LED, MaverickKey, POR, PWM, WDT
• Core Processor: ARM9
• Speed: 166MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, SPI, UART/USART, USB
• Number Of I /o: 19
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 3.6 V
• Data Converters: A/D 5x12b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 208-TQFP, 208-VQFP
• Controller Family/series: (ARM9)
• No. Of I/o's: 19
• Ram Memory Size: 16MB
• Cpu Speed: 166MHz
• No. Of Timers: 4
• Digital Ic Case Style: TQFP
• Embedded Interface Type: SPI
• Rohs Compliant: Yes
• Processor Series: EP93xx
• Core: ARM920T
• Data Bus Width: 32 bit
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Details
• Other names: 598-1136

Receive Descriptor Format - First Word
Receive Descriptor Format - Second Word
DS785UM1
NSOF
31
15
31
15
Definition:
Bit Descriptions:
Definition:
Bit Descriptions:
30
14
30
14
29
13
29
13
28
12
28
12
Receive Descriptor, first word. Contains the base address to the data buffer.
BA:
Receive Descriptor, second word. Contains control, index and length for the
descriptor.
NSOF:
BI:
BL:
27
11
27
11
26
10
26
10
Copyright 2007 Cirrus Logic
25
25
9
9
Buffer Address. This location holds the 32 bit address
pointer to the data buffer, this must point to a word aligned
location.
Not Start of Frame. When the Not Start Of Frame bit is set
in a descriptor, the associated buffer will only be used for a
frame being continued from another buffer. If there is not a
frame to be continued (that is, start of a new frame), the
buffer will be discarded. When a buffer is discarded in this
manner, there is no status posted.
Buffer Index. The buffer index is provided for Host
software purposes. The MAC keeps an internal copy of the
index and includes it with any status writes associated with
a receive buffer.
Buffer Length. The Buffer Length contains the number of
bytes available to be used in the receive buffer. This
should be an integral number of words. If the length is set
to zero, the descriptor will be ignored and no status will be
posted for the buffer.
24
24
8
8
BA
BA
BL
BI
23
23
7
7
22
22
6
6
21
21
1/10/100 Mbps Ethernet LAN Controller
5
5
20
20
4
4
19
19
3
3
EP93xx User’s Guide
18
18
2
2
17
17
1
1
16
16
9-15
0
0
9